1988-04-11_PERMIT FILE - C1981008A ‎(5)‎

• Permit No: C1981008A
• IBM Index Class Name: PERMIT FILE
• Doc Date: 4/11/1988
• Doc Name: Nucla East Geology and Overburden Assessment
• Section_Exhibit Name: Tab 6 Attachment 6-1
• Media Type: D
• Archive: Yes

Table 6-1-2
Parameter, Procedure, and Reference List for Phase I and
Phase II Sampling at the Proposed Nucla East Mine,
Montrose County, Colorado
March, 1988
Parameter-Units Procedure-Reference
Sample preparation Samples were dried at less than 35°C and crushed
to pass a 10 mesh sieve (excessive grinding was
avoided).
Subsampling less than 2 mm fraction USDA (1969), Method 1, p. 83-84.
Preparation of saturation extract USDA (1969), Methods 2 and 3a, pp. 84 and 88,
and saturation percentage and Method 27b, p. 107.
determination
pH (determination using saturated USDA (1969), Method 21a, p. 102.
paste)
Conductivity of saturation extract Sandoval and Power (1978), Method 1, pp. 22-24.
in mmhos/cm at 25°C
Calcium content in the saturation Sandoval and Power (1978), Method 2, p. 24-26.
extract in meq/1
Magnesium content in the saturation Same as Calcium.
extract in meq/1
Sodium content in the saturation Same as Calcium.
extract in meq/1
SAR USDA (1969), p. 26.
ESP in % (determined if SAR is Sandoval and Power (1978), Method 6A, p. 9.
greater than 11)
Sulfate content in the saturation Sandoval and Power (1978), Method 7A, p. 29-30.
extract in meq/1
Total alkalinity in the saturation APHA (1980), Method 403, p. 253-257.
extract in meq/1
Nitrate-Nitrogen in the saturation Page (1982), Section 10-3.6, p. 175.
extract in ppm
Ammonium-nitrogen (extractable) Black (1965), Extraction by 2N NaCl, p.
in ppm 1185-1212. 60 mesh sieve.
6-1-24 Revised 04/11/88